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← TechnologyWhich risk increases when a turbocharger's impeller achieves supersonic speeds?
A)Bearing lubrication thermal breakdown
B)Compressor surge pressure oscillations✓
C)Inefficient combustion fuel dilution
D)Exhaust valve mechanical fatigue
💡 Explanation
Compressor surge can arise because exceeding Mach 1 causes choked flow, limiting airflow and oscillating pressure within the compressor stage. Therefore surge increases rather than other mechanical failures caused by gradual wear.
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